|Time zone||EST (UTC-5)|
|• Summer (DST)||EDT (UTC-4)|
|Forward sortation area||L0P 1B0|
|Area code(s)||905 and 289|
Campbellville, Ontario, Canada is a community in the geographic township of Nassagaweya in the Town of Milton, Halton Region on the Niagara Escarpment and is a tourist destination for residents of the Greater Toronto Area.
Mohawk Racetrack, a harness racing venue, Crawford Lake Conservation Area, Mountsberg Conservation Area, Mennonite furniture shops, an ice cream parlour, and Cristello's Village Market are some local village shops and attractions. The world's largest antique leaded stained glass store and museum (The Stonehouse of Campbellville)is also in this small community. St. David's Presbyterian Church (of The Presbyterian Church in Canada) has been a mainstay in the village since 1869. St. David's current building dates to 1891 with an addition built in 1999. St. David's cemetery dates back to 1908.
Nassagaweya Township was originally part of Halton County. When the Regional Municipality of Halton was created in 1974, the township became part of the Town of Milton. Campbellville was a part of the original Nassagaweya Township.
- Deadmau5, progressive music DJ and producer
- Charles Clarence "Clare" Laking (February 21, 1899 – November 26, 2005), believed to be the longest lived World War I veteran in Canada who fought on the front lines.
- Grand Duchess Olga Alexandrovna of Russia (13 June [O.S. 1 June] 1882 – 24 November 1960), escaped to Canada after World War II and settled in the area before moving to Cooksville.
- Bruce Hood, NHL Referee, travel industry professional and aspiring politician.
- Ronald Roberts, WHA and NHL executive and insurance industry executive
- Esther the Wonder Pig   
- Hitherfield Preparatory School
- Brookville Public School
||Guelph-Eramosa, Brookville, Rockwood|
|Cambridge, Puslinch, Moffat||Milton, Georgetown, Acton|
|Hamilton, Burlington, Oakville, Lowville|
- Rattlesnake Point
- Conservation Halton
- Glen Eden (Ski Area)
- Kelso Conservation Area
- Halton County Radial Railway Museum
- Hilton Falls Conservation Area
- "Diocese of Canada." Serbian Orthodox Church in North and South America. Retrieved on February 27, 2011. "Residence: Holy Transfiguration Serbian Orthodox Monastery 7470 McNiven Rd RR #3 Campbellville, Ontario L0P 1B0"
- Campbellville at Geographical Names of Canada
- Escarpment Country Tourism
- Global Gazette, Canada's Online Family History Magazine
- Halton County Streetcar & Electric Railway Museum
- The Stonehouse of Campbellville
- St. David's Presbyterian Church in Campbellville
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